For environmental samples (surface water, wastewater), food samples, or general laboratory sampling from storage containers. The hand pump creates a vacuum by pulling, allowing liquids to be drawn from depths of up to 5 m.
POA means "Price On Application". Items displaying POA instead of the sell price do so for a number of reasons, not least because we anticipate some additional information is required in order to supply the most suitable options/configuration to each individual customer.